3243216540 has 48 divisors (see below), whose sum is σ = 9084731040. Its totient is φ = 864503040.

The previous prime is 3243216521. The next prime is 3243216541. The reversal of 3243216540 is 456123423.

3243216540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 3243216498 and 3243216507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3243216541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157650 + ... + 177030.

It is an arithmetic number, because the mean of its divisors is an integer number (189265230).

Almost surely, 2^3243216540 is an apocalyptic number.

3243216540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3243216540 is an abundant number, since it is smaller than the sum of its proper divisors (5841514500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3243216540 is a wasteful number, since it uses less digits than its factorization.

3243216540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22182 (or 22180 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 3243216540 is about 56949.2452978966. The cubic root of 3243216540 is about 1480.2167536202.

Adding to 3243216540 its reverse (456123423), we get a palindrome (3699339963).

The spelling of 3243216540 in words is "three billion, two hundred forty-three million, two hundred sixteen thousand, five hundred forty".